Installing the AlphaServer IP Platform Hardware

To cable the DTI/212 120-ohm module to the E-1 network, follow these steps:

1.Align the RJ-48C connector at the DTI/212 120-ohm module end of the E-1 to DTI/212 120-ohm cable with jack J201 on the rear bracket of the DTI/212 module.

2.Gently push the cable connector into the RJ-48C jack until it snaps into place.

2.4.1.1.4 Connecting Dialogic LSI/120 Loop-Start Module

The customer is responsible for supplying additional cabling to connect the LSI/120 network interface module to the telephone company lines.

Refer to the Dialogic Network Hardware Reference for additional information on LSI/120 modules.

You can choose from the following connection options:

Use Compaq's BC22F cable. This cable has a DB-25 connector on one end (to connect to the LSI/120), and a 50-pin connector on the other end that provides 12 tip and ring pin pairs that are compatible with a standard RJ-21X USOC jack.

Use Dialogic's SA/120 RJ-11 assembly. This assembly accepts the 50-pin male connector from the SA/120 RJ-21 cable and terminates with 12 RJ-11 connectors. This cable allows you to connect individual subscriber lines to the LSI/120.

The pin-out specifications in Table 2-5 and Table 2-6 are for connector P3 on the LSI/120. This cable uses a 25-pin female DB-25 connector (Amphenol part number 745495-2 or equivalent) on the LSI/120 end, and a 50-pin jack (Amphenol part number 157-72500-3 or equivalent) that is compatible with an RJ-21X USOC jack.

Table 2-5: LSI/120 Loop-Start 25-Pin Designations

TIP 8

1

14

RING 12

RING 8

2

15

TIP 12

TIP 9

3

16

RING 11

RING 9

4

17

TIP 11

TIP 4

5

18

RING 10

RING 4

6

19

TIP 10

TIP 7

7

20

TIP 3

RING 7

8

21

RING 3

TIP 6

9

22

RING 1

RING 6

10

23

TIP 1

TIP 5

11

24

RING 2

RING 5

12

25

TIP 2

RESERVED

13

 

 

 

 

 

 

AlphaServer Intelligent Peripheral Platform Hardware Owner's Guide 2–7

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Compaq EK-ASIP2-OG. D01 manual Connecting Dialogic LSI/120 Loop-Start Module, LSI/120 Loop-Start 25-Pin Designations

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